At the end of every episode of GI Joe, the network would play on of the the famous G.I. Joe Public Service Announcements. The best is probably the Electrical Wire In The Road. They would always go something like this:

Kid1: "Hey lets do (something stupid)!"
Kid2: "Are you sure that's a good idea?"
Kid1: "What are you, chicken?"
G.I. Joe Specialist: Something to the effect of "Kid, youre dumb. You almost just killed yourself."
Idiot kid who almost just killed himself: "Thanks. Now I know."
G.I. Joe Soldier: "And knowing is half the battle!"
Logo flashes, G.I. Joe Theme Song: "G.I. Joe!!!"

I'm sure the network required them do do these (very short) little public service announcements at the end of every episode so that the show would have some redeeming value after 30 minutes of nonstop violence, lasers and explosions, where no one but cobra robots were ever hit. (except in the movie, where Duke actually goes into a COMA).

The DVD for the G.I. Joe movie has 25 classic Public service annoucements. I watched them all the other day. Hilarious.